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188837-55-0

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188837-55-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 188837-55-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,8,8,3 and 7 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 188837-55:
(8*1)+(7*8)+(6*8)+(5*8)+(4*3)+(3*7)+(2*5)+(1*5)=200
200 % 10 = 0
So 188837-55-0 is a valid CAS Registry Number.

188837-55-0Relevant articles and documents

Aminolysis of aryl ester using tertiary amine as amino donor via c-o and c-n bond activations

Bao, Yong-Sheng,Zhaorigetu, Bao,Agula, Bao,Baiyin, Menghe,Jia, Meilin

, p. 803 - 808 (2014/04/03)

An aminolysis reaction between various aryl esters and inert tertiary amines by C-O and C-N bond activations has been developed for the selective synthesis of a broad scope of tertiary amides under neutral and mild conditions. The mechanism may undergo the two key steps of oxidative addition of acyl C-O bond in parent ester and C-N bond cleavage of tertiary amine via an iminium-type intermediate.

1,3,4-Oxadiazole formation as traceless release in solid phase organic synthesis

Cesarini, Sara,Colombo, Nicoletta,Pulici, Maurizio,Felder, Eduard R.,Brill, Wolfgang K.-D.

, p. 10223 - 10236 (2007/10/03)

Oxadiazoles were generated upon a dehydrative cyclization reaction with 2-acyl hydrazides bound to the polymeric support via one of their N atoms using TFAA as a dehydration agent.

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